Imported Upstream version 2.10.1
[platform/upstream/git.git] / fast-import.c
index 3c65edb..bf53ac9 100644 (file)
@@ -164,8 +164,8 @@ Format of STDIN stream:
 #include "refs.h"
 #include "csum-file.h"
 #include "quote.h"
-#include "exec_cmd.h"
 #include "dir.h"
+#include "run-command.h"
 
 #define PACK_ID_BITS 16
 #define MAX_PACK_ID ((1<<PACK_ID_BITS)-1)
@@ -282,6 +282,7 @@ struct recent_command {
 /* Configured limits on output */
 static unsigned long max_depth = 10;
 static off_t max_packsize;
+static int unpack_limit = 100;
 static int force_update;
 static int pack_compression_level = Z_DEFAULT_COMPRESSION;
 static int pack_compression_seen;
@@ -300,7 +301,7 @@ static int failure;
 static FILE *pack_edges;
 static unsigned int show_stats = 1;
 static int global_argc;
-static char **global_argv;
+static const char **global_argv;
 
 /* Memory pools */
 static size_t mem_pool_alloc = 2*1024*1024 - sizeof(struct mem_pool);
@@ -329,6 +330,7 @@ static const char *export_marks_file;
 static const char *import_marks_file;
 static int import_marks_file_from_stream;
 static int import_marks_file_ignore_missing;
+static int import_marks_file_done;
 static int relative_marks_paths;
 
 /* Our last blob */
@@ -414,7 +416,7 @@ static void write_crash_report(const char *err)
        struct recent_command *rc;
 
        if (!rpt) {
-               error("can't write crash report %s: %s", loc, strerror(errno));
+               error_errno("can't write crash report %s", loc);
                free(loc);
                return;
        }
@@ -595,6 +597,33 @@ static struct object_entry *insert_object(unsigned char *sha1)
        return e;
 }
 
+static void invalidate_pack_id(unsigned int id)
+{
+       unsigned int h;
+       unsigned long lu;
+       struct tag *t;
+
+       for (h = 0; h < ARRAY_SIZE(object_table); h++) {
+               struct object_entry *e;
+
+               for (e = object_table[h]; e; e = e->next)
+                       if (e->pack_id == id)
+                               e->pack_id = MAX_PACK_ID;
+       }
+
+       for (lu = 0; lu < branch_table_sz; lu++) {
+               struct branch *b;
+
+               for (b = branch_table[lu]; b; b = b->table_next_branch)
+                       if (b->pack_id == id)
+                               b->pack_id = MAX_PACK_ID;
+       }
+
+       for (t = first_tag; t; t = t->next_tag)
+               if (t->pack_id == id)
+                       t->pack_id = MAX_PACK_ID;
+}
+
 static unsigned int hc_str(const char *s, size_t len)
 {
        unsigned int r = 0;
@@ -622,7 +651,7 @@ static void *pool_alloc(size_t len)
                        return xmalloc(len);
                }
                total_allocd += sizeof(struct mem_pool) + mem_pool_alloc;
-               p = xmalloc(sizeof(struct mem_pool) + mem_pool_alloc);
+               p = xmalloc(st_add(sizeof(struct mem_pool), mem_pool_alloc));
                p->next_pool = mem_pool;
                p->next_free = (char *) p->space;
                p->end = p->next_free + mem_pool_alloc;
@@ -814,7 +843,8 @@ static struct tree_entry *new_tree_entry(void)
        if (!avail_tree_entry) {
                unsigned int n = tree_entry_alloc;
                total_allocd += n * sizeof(struct tree_entry);
-               avail_tree_entry = e = xmalloc(n * sizeof(struct tree_entry));
+               ALLOC_ARRAY(e, n);
+               avail_tree_entry = e;
                while (n-- > 1) {
                        *((void**)e) = e + 1;
                        e++;
@@ -864,15 +894,12 @@ static void start_packfile(void)
 {
        static char tmp_file[PATH_MAX];
        struct packed_git *p;
-       int namelen;
        struct pack_header hdr;
        int pack_fd;
 
        pack_fd = odb_mkstemp(tmp_file, sizeof(tmp_file),
                              "pack/tmp_pack_XXXXXX");
-       namelen = strlen(tmp_file) + 2;
-       p = xcalloc(1, sizeof(*p) + namelen);
-       xsnprintf(p->pack_name, namelen, "%s", tmp_file);
+       FLEX_ALLOC_STR(p, pack_name, tmp_file);
        p->pack_fd = pack_fd;
        p->do_not_close = 1;
        pack_file = sha1fd(pack_fd, p->pack_name);
@@ -898,7 +925,7 @@ static const char *create_index(void)
        struct object_entry_pool *o;
 
        /* Build the table of object IDs. */
-       idx = xmalloc(object_count * sizeof(*idx));
+       ALLOC_ARRAY(idx, object_count);
        c = idx;
        for (o = blocks; o; o = o->next_pool)
                for (e = o->next_free; e-- != o->entries;)
@@ -952,6 +979,23 @@ static void unkeep_all_packs(void)
        }
 }
 
+static int loosen_small_pack(const struct packed_git *p)
+{
+       struct child_process unpack = CHILD_PROCESS_INIT;
+
+       if (lseek(p->pack_fd, 0, SEEK_SET) < 0)
+               die_errno("Failed seeking to start of '%s'", p->pack_name);
+
+       unpack.in = p->pack_fd;
+       unpack.git_cmd = 1;
+       unpack.stdout_to_stderr = 1;
+       argv_array_push(&unpack.args, "unpack-objects");
+       if (!show_stats)
+               argv_array_push(&unpack.args, "-q");
+
+       return run_command(&unpack);
+}
+
 static void end_packfile(void)
 {
        static int running;
@@ -974,6 +1018,14 @@ static void end_packfile(void)
                fixup_pack_header_footer(pack_data->pack_fd, pack_data->sha1,
                                    pack_data->pack_name, object_count,
                                    cur_pack_sha1, pack_size);
+
+               if (object_count <= unpack_limit) {
+                       if (!loosen_small_pack(pack_data)) {
+                               invalidate_pack_id(pack_id);
+                               goto discard_pack;
+                       }
+               }
+
                close(pack_data->pack_fd);
                idx_name = keep_pack(create_index());
 
@@ -1004,6 +1056,7 @@ static void end_packfile(void)
                pack_id++;
        }
        else {
+discard_pack:
                close(pack_data->pack_fd);
                unlink_or_warn(pack_data->pack_name);
        }
@@ -1514,7 +1567,7 @@ static int tree_content_set(
        t = root->tree;
        for (i = 0; i < t->entry_count; i++) {
                e = t->entries[i];
-               if (e->name->str_len == n && !strncmp_icase(p, e->name->str_dat, n)) {
+               if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) {
                        if (!*slash1) {
                                if (!S_ISDIR(mode)
                                                && e->versions[1].mode == mode
@@ -1604,7 +1657,7 @@ static int tree_content_remove(
        t = root->tree;
        for (i = 0; i < t->entry_count; i++) {
                e = t->entries[i];
-               if (e->name->str_len == n && !strncmp_icase(p, e->name->str_dat, n)) {
+               if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) {
                        if (*slash1 && !S_ISDIR(e->versions[1].mode))
                                /*
                                 * If p names a file in some subdirectory, and a
@@ -1671,7 +1724,7 @@ static int tree_content_get(
        t = root->tree;
        for (i = 0; i < t->entry_count; i++) {
                e = t->entries[i];
-               if (e->name->str_len == n && !strncmp_icase(p, e->name->str_dat, n)) {
+               if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) {
                        if (!*slash1)
                                goto found_entry;
                        if (!S_ISDIR(e->versions[1].mode))
@@ -1804,12 +1857,12 @@ static void dump_marks(void)
        static struct lock_file mark_lock;
        FILE *f;
 
-       if (!export_marks_file)
+       if (!export_marks_file || (import_marks_file && !import_marks_file_done))
                return;
 
        if (hold_lock_file_for_update(&mark_lock, export_marks_file, 0) < 0) {
-               failure |= error("Unable to write marks file %s: %s",
-                       export_marks_file, strerror(errno));
+               failure |= error_errno("Unable to write marks file %s",
+                                      export_marks_file);
                return;
        }
 
@@ -1824,8 +1877,8 @@ static void dump_marks(void)
 
        dump_marks_helper(f, 0, marks);
        if (commit_lock_file(&mark_lock)) {
-               failure |= error("Unable to write file %s: %s",
-                       export_marks_file, strerror(errno));
+               failure |= error_errno("Unable to write file %s",
+                                      export_marks_file);
                return;
        }
 }
@@ -1837,7 +1890,7 @@ static void read_marks(void)
        if (f)
                ;
        else if (import_marks_file_ignore_missing && errno == ENOENT)
-               return; /* Marks file does not exist */
+               goto done; /* Marks file does not exist */
        else
                die_errno("cannot read '%s'", import_marks_file);
        while (fgets(line, sizeof(line), f)) {
@@ -1867,6 +1920,8 @@ static void read_marks(void)
                insert_mark(mark, e);
        }
        fclose(f);
+done:
+       import_marks_file_done = 1;
 }
 
 
@@ -1888,7 +1943,7 @@ static int read_next_command(void)
                        struct recent_command *rc;
 
                        strbuf_detach(&command_buf, NULL);
-                       stdin_eof = strbuf_getline(&command_buf, stdin, '\n');
+                       stdin_eof = strbuf_getline_lf(&command_buf, stdin);
                        if (stdin_eof)
                                return EOF;
 
@@ -1960,7 +2015,7 @@ static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res)
 
                strbuf_detach(&command_buf, NULL);
                for (;;) {
-                       if (strbuf_getline(&command_buf, stdin, '\n') == EOF)
+                       if (strbuf_getline_lf(&command_buf, stdin) == EOF)
                                die("EOF in data (terminator '%s' not found)", term);
                        if (term_len == command_buf.len
                                && !strcmp(term, command_buf.buf))
@@ -3319,6 +3374,7 @@ static void parse_option(const char *option)
 static void git_pack_config(void)
 {
        int indexversion_value;
+       int limit;
        unsigned long packsizelimit_value;
 
        if (!git_config_get_ulong("pack.depth", &max_depth)) {
@@ -3343,6 +3399,11 @@ static void git_pack_config(void)
        if (!git_config_get_ulong("pack.packsizelimit", &packsizelimit_value))
                max_packsize = packsizelimit_value;
 
+       if (!git_config_get_int("fastimport.unpacklimit", &limit))
+               unpack_limit = limit;
+       else if (!git_config_get_int("transfer.unpacklimit", &limit))
+               unpack_limit = limit;
+
        git_config(git_default_config, NULL);
 }
 
@@ -3383,14 +3444,10 @@ static void parse_argv(void)
                read_marks();
 }
 
-int main(int argc, char **argv)
+int cmd_main(int argc, const char **argv)
 {
        unsigned int i;
 
-       git_extract_argv0_path(argv[0]);
-
-       git_setup_gettext();
-
        if (argc == 2 && !strcmp(argv[1], "-h"))
                usage(fast_import_usage);